Thyroid gland
Other carcinoma
WDT-UMP / Well differentiated neoplasm of uncertain malignant potential

Author: Shuanzeng Wei, M.D., Ph.D. (see Authors page)
Editor: Andrey Bychkov, M.D., Ph.D.

Revised: 17 February 2017, last major update January 2017

Copyright: (c) 2003-2017, PathologyOutlines.com, Inc.

PubMed Search: well differentiated neoplasm of uncertain malignant potential OR WDT-UMP

Cite this page: WDT-UMP / Well differentiated neoplasm of uncertain malignant potential. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/thyroidwelldiffump.html. Accessed April 28th, 2017.
Definition / general
Essential features
  • Follicular neoplasm with equivocal nuclear features of papillary thyroid carcinoma and questionable capsular or vascular invasion
Prognostic factors
  • Excellent prognosis with lobectomy
Gross description
  • Well circumscribed or encapsulated solid nodule
Microscopic (histologic) description
  • Well circumscribed or encapsulated follicular neoplasm with equivocal nuclear features of papillary thyroid carcinoma and questionable capsular or vascular invasion
Microscopic (histologic) images

Images hosted on PathOut server:

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Contributed by Shuanzeng Wei, M.D., Ph.D.



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Schematic drawing for capsular invasion (left) and vascular invasion (right)

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Equivocal nuclear
features of papillary
thyroid carcinoma

Cytology description
Cytology images

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Cytological features of WDT-UMP

Positive stains
Differential diagnosis